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- Newsgroups: comp.os.vxworks
- Path: sparky!uunet!stanford.edu!kronos.arc.nasa.gov!doctor
- From: doctor@kronos.arc.nasa.gov (Terry Fong)
- Subject: how to implement a controller (aka need to periodically trigger task)
- Message-ID: <1992Sep1.164510.27845@kronos.arc.nasa.gov>
- Summary: need info on writing a digital controller
- Keywords: controller, 5.0.2
- Sender: usenet@kronos.arc.nasa.gov (Will Edgington, wedgingt@ptolemy.arc.nasa.gov)
- Nntp-Posting-Host: tardis-arclan.arc.nasa.gov
- Organization: NASA/ARC Information Sciences Division
- Date: Tue, 1 Sep 1992 16:45:10 GMT
- Lines: 30
-
- Hi all,
-
- This may be a FAQ item (is there one for this group?), but I'd like to
- hear some opinions on a question:
-
- Using VxWorks 5.0.2, what is the best way to implement a digital
- controller? In other words, what is the best approach to get a
- task to trigger at a specific frequency (i.e., 10-100 Hz) such that
- system resources are minimally used? Do you setup an ISR off of the
- clock to signal (or semaphore) a pended task? Do you use watchdog
- timers repeatedly? Do you run a task at a high priority and let it
- poll a timer?
-
- Please send any/all responses to: terry@ptolemy.arc.nasa.gov
-
- I'll post a summary of the answers I receive. Thanks in advance!
-
- -Terry
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- --
- _______________________________________________________________________________
- "You do not understand anything | Terry Fong <terry@ptolemy.arc.nasa.gov>
- until you understand it in more | NASA Ames, M/S 269-3, Moffett Field, CA
- than one way..." -- Marvin Minsky | (415) 604-6063, FTS-464-6063
-